Question Laptop GPU/CPU, lag problems..Please Help

Apr 18, 2021
I have a new problem with my pc, I encounter it all the time in games and also in normal use. When under full load the laptop stutters , I mean in games(csgo) it goes with 120-130 fps for 2-3 seconds than it lags for 1-2 seconds(20-30fps) and goes up again to 120-130 and its doing this continuously(it used to run in 150-160 all the time)
Its doing this in chrome and other apps too.

Laptop: Acer Aspire 3
Cpu: Intel i7-10510U
Gpu: Nvidia MX230
Ram: 8GB ddr4

I dont know what the problem is, the only thing I might know is the cause but I'm not sure if this is it.
I opened the latop up, to see the internals(to see if an ssd upgrade is possible), and I saw that there was a lot of thermal paste in a lot of places where it shouldn't be(on the green coloured motherboard pieces), at least thats what i thought , but im sure the motherboard requires no thermal paste, and not in so small ammounts, so i cleaned it, gently with a cotton swab, and then put back the copper pipes on the cpu and gpu( one piece ) and I dont know if i tightened the screws enough or too much.
I tried losening them and tightening them, it helped a bit but not back to normal, and now after more antempts of adjustment I think its the worst (60-80fps in menu) (35-45fps in game ) and it still does that 1-2 second lag

(Also when it was more okish(frames were 100-110), when i pressed not hard(gently) the part on the pc where the cpu and gpu is (metal part in front of pc above keyboard) it dropped suddenly to 20-30fps again)
I found this very strange.

I tried to do everything as gently and patiently as possible but now I'm relly scared that I messed everything up.... :'(

It is still in warranty but I think I already voided that with my stupid acts.(if not please tell me so i can send it in for repair)

Thanks in advance for any help, I really appreciate it!

Ps: I tried Cpu stress test and when stress test said it was 100% load, task manager showed the cpu was only at 60-70% constant and
1.83 ghz , Although the cpu supports max 4.9ghz
Apr 18, 2021
I know 1.8 is base but when set to performance the cpu stays at 4.5-4.6ghz , but when stress test was stared 4.5-4.6 turned to 1.8 almost immediately
Apr 19, 2021
It is because you have an 'ULTRA LOW POWER' variant of an I5. This means you get even lower clock speeds , because it uses less power. Also, you are severely limited by your GPU so that is why there is a bottleneck.
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