Hello people i've tried everything and im not sure what to do anymore..im on a laptop and when i got it i used to play with many mods with 60 PFS outside up to 110 inside...and month by month the FPS are getting worse and worse..down to 15-20 in exterior cells .. I made a clean game without mods..the same.. even if i play it on low/medium/high definitions its still the same..i mostly have immersion mods and mods to boost FPS..as many as far as i can find..but still nothing is fixing it..it overheats but i control it..could it be a virus or is it common to see this progression in FPS drop by the passing time in PCs,Laptops?

Thank you!

It's probably slowing down because it's overheating. It will do that to protect itself from damage.

Are the cooling vents clear? Is the fan working correctly? Is the computer possibly clogged with dust, pet hair, etc.?

I'm with Glargg if you did a "clean" start of a new game and the FPS is slow to start, then their is another reason aside from just the game.

Check the vent's for dust etc... but also check to see if an update didn't happen at the same time as the slowdown.. I mean a window's update.. cause that can cause some issues as well.

I'm sure that those who are really good will want to see a Dxdaig report, your load order and what the PC spec's are.. put them all in spoiler tags.. that will help them a lot.