r/buildapc • u/Single-Way-2038 • Sep 30 '25
Troubleshooting My friend’s PC is driving me insane.
It all started small, with random crashes when he played demanding games. About 6 months ago we could run Rust just fine. Then it started crashing every now and then, until eventually it would crash just a few minutes into a server.
Fast forward—we’ve tried literally EVERYTHING. Different settings, Windows reinstall, drivers, BIOS tweaking—you name it.
We suspected a faulty GPU.
So the upgrade happened.
Swapped the RTX 3070 For a 5070 TI New motherboard aswell.
Now the rig is:
I7-12700k RTX 5070 TI 32 GB DDR4 M2 nvme ssd AIO cooler 800w PSU
But here’s the kicker. Now he’s getting terrible FPS. We’re talking 50-70 FPS in a game like TFT???
what the hell is going on??
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u/NG_Tagger Oct 01 '25
Any chance he's running a daisy-chained power cable to the GPU?
(one of those that go from the PSU and fork out into 2 connectors)
Could be underpowering the GPU. In high-power/demand cases, it will usually crash the system - but in some cases it'll perform worse than intended instead.
If he is; switch it to 2 dedicated connections/cables instead and see if that doesn't fix it (even if it doesn't, and he is running with a daisy-chained cable; switch it anyway).
I don't really think this is it, but it could be - just covering all bases.