Legion 7 started overheating for no reason

My Legion 7-16ACHg6 Laptop (Lenovo) - Type 82N6 is overheating. The CPU reaches 103 degrees and GPU reaches 98 degrees in games. The GPU throttles down to 200 MHz

This problem occurred recently. I have changed the thermal paste and also cleaned the dust with an air spray. The print from the thermal paste on CPU and GPU is good. The strange thing is that when it overheats the fans work fine at 100% but blow out cold air. I have a suspicion that something is wrong with the cooling system. Any ideas?

I can't use the warranty service because I bought it in another country so the people form the service said they can't help me with it

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UPD: After screwing the heatsink differently the temp are much better now. The GPU still throttles hard after hitting 87 degrees though.

I ordered Honeywell 7950 and K5 PRO to replace thermal pads. I'll post an update after trying it.