[2021] [Gameplay]R6S mouse dragging issue

Recently my gaming experience was so bad, because the mouse dragging problem. I can't move my mouse quickly to an enemy, also I can't turn my drone quick. This issue is when I drag my mouse from A to B, there is a great delay happening. If I drag the mouse from A to B used 1 sec, in game it will use 2 or 3 sec to travel the distance. This is weird since I don't get this issue before.
when this issue first happened, i turned the raw input on, it fixed. But now it comes again with raw input on. (I don't have 100% CPU, but I do have a 90% of memory usage. is this the problem?)
I tried to Vsync, it didn't help.
I tried to fix my local game file, didn't help.
I tried to change my resolution, nothing changed.
I tried to disable fullscreen optimizations, and it didn't work.

this issue only appears when I am playing r6s, other games won't have this issue at all.

Can someone help?

Hello SakurauchiOuka, thank you for posting about this issue with your mouse.

What kind of mouse do you use and what software came with it? Have you been able to check for any firmware updates you r mouse may need?

Can I also ask do you often use ALT+TAB between rounds, as the game can sometimes stop recognising mouse movements and functions if this is performed.

Are you using any game overlays when playing? Disabling any overlay in your game launcher may also resolve this issue.

Finally, do you use any software in the background when playing the game such as -

Full Screen Game Overlays
VoIP and Chat services
RGB controllers
Overclocking Software
Hardware monitoring
Streaming software
Peer to Peer software
VPN

Please disable these applications from running in the background to stop any extra strain on your PC, by performing a full 'clean boot'. This list details some of the more well known programs known to cause conflicts with our games - https://support.ubisoft.com/en-GB/Faqs/000025721

Let me know how you get on after testing the game without these applications running and if you could please answer the questions above that would be grand, thank you.

Recent Rainbow Six Siege Posts

Y9S4 Designer's Notes

R6 SIEGE | Y9S4 Reveal: Operation Collision Point

Y9S3 MID-SEASON ROADMAP UPDATE

booted?