Lag input on tv


I have a TCL 55 inch 4k smart tv (55s401 series) and there is a massive input lag from my computer to tv. I’ve put it into gaming mode but that only changed it’s slightly, I’ve also turned off features and nothing really helps.

I have checked my graphics card on my computer and it does support 4k output, HDMI cord is good at least to my knowledge. My question is if you’ve experienced this problem how did you end up fixing it or if anyone has any knowledge of how to fix it please let me know I’ve tried everything I could think of.

Sorry if this is an incorrect place to post this, if this is incorrect maybe someone can point me in the right direction?


I’ve had a look online, but can’t find a source for what input lag that TV has. In the absence of that information, all you could really do is connect another device (PS4 etc) and see if you subjectively feel lag from the TV, or plug the PC into a different monitor/TV with known low lag and see if you still feel lag there.


what game are you playing? when im playing tekken, i notice input lag the longer i play on my monitor. I play in 4k res on an acer predator x32. IIRC it has around 5ms response at 60 hz.

I have a feeling its something with the 4k res. I have my ps4 plugged into the same monitor and as far as I can tell, tekken doesn’t have this weird delayed input lag like the pc has. I can’t say for sure of course, i honestly dont play the ps4 version as much and then there is the built in frame delay differences between the two platforms. its not game breaking by any means, but I can only play on my sticks that have a brook ufb modded into it. I have tried playing in 2k or less, but honestly im a bit of a snob when it comes resolution. it has to look amazing, otherwise what was the point in building this 4k setup.


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lol relax im just giving the specs of my monitor. i know its not you posting that, but i don’t think it is causing my issue because I don’t notice it when I play on ps4. I am really curious what game or games he is playing and if it is something to do with how the 4k image is being processed.


I know, and I try not to sound as aggressive as the person I am quoting.
It is a misconception when it comes to HD TVs and I want to nip that bud now before we continue.

Also any time you game, if your TV has a Game or PC Mode, use that. It will cut down on any lag.


Never has a monitor or TV come with official specs that contained information on input lag, sadly. Tests are done by third parties using various methods, all of which yield different results that can’t be directly compared.


Well I have a 55in 4K HDTV and when I switched to my 24ish inch Samsung I noticed a huge difference in input when I was playing SF5. I went from the TV to my monitor and there was a huge difference. I don’t think tv’s that size are very good for fighting games to be honest. My tv had a game mode also and it didn’t make a bit of difference, at least not when compared to my smaller 4K Samsung monitor. The smaller the better I’ve found. The 17in monitor on my GAEMS Vanguard unit is the best I’ve used so far. Good luck with that man.


Yeah the 17 to 32 inch range is ideal for Gaming. 4K still rather new and Large screen 4K TVs are not quite up to snuff for Gaming yet.
Also a PC monitor is bound to be better than a TV, Monitors don’t have any post image processing other than maybe scaling


I’ve been thinking about this issue too. Planning on building a cabinet for a dreamcast system. Wonder if the newer led tvs are any good for such an old system. Can’t really use a crt on a cabinet… Too damn big and heavy.


Great minds think alike. I plan on doing the same with my second DC. You can use any modern HDMI monitor, providing you use the right (VGA to HDMI) adapter.


Right on. I’m curious what setups are using for your cabinet? In terms of PCB for the joystick controls. Originally I only wanted to run the TDC final disk on my DC… But I’ve just found a disc that has like 500 Sega roms on it that works on the dreamcast. I was planning on using the MC cthulhu… But it only works with fighting games.

Still deciding on whether to get a hacked common ground DC controller pad or MC cthulhu.

Want to decide on these before I actually start building.


Oh and do you have anything adapter in mind for the VGA to HDMI?


I bought two beat up Agetec sticks and gutted them for their pcbs. I also bought two GDEMUs to load games on SD cards (instead of GD-ROM discs)

For straight VGA to HDMI you can get something like:

Or just go with:


Between network lag and local TV, doesn’t feel like you are more pro-active and less reactive? in the days of local competition and CRT TV you can organically “feel” your way through combos, where the timing was more evident, and the timing depends on when the hits land, whereas nowadays, because even good TVs are 2 frames behind, anything beyond 2 hits must be practiced, because the timing is not obvious to anyone who organically “feels” through a game? Doesn’t feel like you have to pre-meditate a combo?

One game, Killer Instinct 3, at first I was trying to feel my way through combos, but then I found out, just go to town on the buttons in a random fashion and you will get “godlike” combos. It’s the most open combo game. Which is ironic because Killer Instinct 1, 2, and Gold had engineered combos that were fairly free-form, but had a structure you had to figure out or else you were just doing onesies. If you have the instruction book, it will tell you the basic structure, but if you don’t have it, onesies.

Also I break more combos of theirs than they do of mine because most opponents I face use the same combos over and over until you stuff them. I figure out a good interruption point, by try #2, if I recognize the combo, i can break it. Because I’m pressing random buttons, there is no rhyme or reason to my combos, making them harder to break.

Also defense is tougher. The only way I can successfully block in time with a new HDMI TV is if I seen the combo before and my opponent goes to the well one too many times, or else willfully say I’m going to block it, and even then there’s no guarantee of whether it will be high or low unless they overuse it. Virtua Fighter becomes futile if you can’t instantly block. And the timing of the joystick requires you to premeditate your combos and specials instead of discovery

I felt before, in the days of CRT TVs, I had a more reasonable chance to block more hits by a human or computer opponent. Is that my imagination, or is there some truth in what I’m saying? Has fighting games lost the defensive and “play by feel” methods, and changed fundamentally, thanks to modern TV technology?

If that’s the case, someone should release a 20 inch, 4K, 3D, 16x9, CRT TV with older inputs too. I notice the ONLY high definition CRTs back in the mid 2000s when those were made were 35 inches or larger, hence, not a good gaming tvs, and basically become Xtoplopiketl, a giant stone head. Some people say modern inputs are high ping, because they are digitized, ut if you can play a light gun in HD mode on an HD CRT TV, then the issues of ping could be laid to rest. I even got a cooil name for a line of modern Gaming CRT TVs, “Pingwin”, and the mascot would be a penguin. A slogan could be “Less ping. More win” I got a 20 inch iMac with just a CD-R drive that has little floor space, and I believe that THOSE were CRT monitors, so a monitor doesn’t have to be heavy or carry a big footprint. Just has to be nanosecond quick.


You also want to factor in the game engine, The newest Unreal Engine has like 120 ms of lag just in the game code. And I think that is after a undate to reduce the input lag