How I fixed my input lag/desync/unrealistic animations/etc issue

[iris]

For the past 2 years I was suffering with floaty mouse and other symptoms people describe here. My main game is Valorant and my best try to put what happens into words is everyhting on screen feels like it doesn't happen in real time, but instead multiple actions is "packed" into one and you get just the result of this "pack".

In those 2 years I changed apartments, upgraded every single component in my PC, some even more than once, tried various Windows/BIOS optimizations, and solutions to Ryzen-specific issues lie disabling fTPM, changing PCIe version to Gen3, etc. but even if the issue was fixed it came back hours or days later even if Windows had updates disabled and I didn't installed anything new. I really started to think this was some EMI/electrical or grounding problem.

In April-May only one thing remained constant - after fresh Windows intall everything was good for at least some hours, then I found one reddit thread where somebody was suggesting downgrading "Microsoft Visual C++ Redistributable" to older versions and that was basically it. Can't post links here, so here is the solution:

1. Go to settings -> Apps -> Installed apps(Add or Remove programs)
2. Uninstall all "Microsoft Visual C++ Redistributable"
3. Install vcredist version 14.40.33816.0 or older (I personally go with 14.38.33135.0, this is what Windows 11 23H2 comes with fresh)
4. Also, I noticed that installing latest AMD Chipset drivers was causing similar lag but to a lesser extent. Older chipset drivers Windows comes with work just fine tho.
5. Keep in mind that vcredist can be updated by Steam if you launch a new game, even if the game for example is installed on non-system disk but was never launched on fresh Windows, Steam will update vcredist before first launch. But if first launch already happened and you manually downgraded afterwards, Steam doesn't update vcredist.

Issue is fixed for almost a month for me, not a single case of weird animation or "floaty" mouse so far.

I always thought this piece of software is like, backwards-comaptible, but I guess not. AI says that since version 14.40.33816.0 to latest there were changes related to multithreading and timers which could cause issues like this in games.

[Inputlagguy]

Glad to hear u have consistent gameplay for a little time so far but this seems like a pointless tweak that will eventually just go away

I’ve had this problem far before i purchased a PC. On both my Xbox and ps5. So explain why it’s happening on my consoles as well?

It is Not a windows issue