lower frames after gpu upgrade

[DesoCS]

Specs

Ryzen 7 3700x

32 GB RAM 3200mhz

RX 6600

 

So I recently upgraded my GPU from a RX 5500 to a 6600 and also changed my power supply from 500w to 750w but I noticed that my frames dropped as much as 10% in some of my games after my upgrade. My motherboard has one x16 PCIE 3.0 slot and the card is 4.0 which I thought was the problem at first but after looking around apparently upgrading to a 4.0 motherboard would only lead to a modest improvement so I was wondering if anyone could explain the drop in frames      

[BiotechBen]

The 6600 is only using an x8 link @4.0, and so in a gen 3 board, it's essentially running x8 @ gen 3.

[DesoCS]

29 minutes ago, BiotechBen said:

The 6600 is only using an x8 link @4.0, and so in a gen 3 board, it's essentially running x8 @ gen 3.

So would upgrading my motherboard be worth it or would the benefit be minimal 

[Heliian]

Did you try clearing and reinstalling the drivers? 

 

I would even do a fresh winstall and games install before changing the mobo. 

[DesoCS]

5 minutes ago, Heliian said:

Did you try clearing and reinstalling the drivers? 

 

I would even do a fresh winstall and games install before changing the mobo. 

i did use a driver cleaner and reinstalled the drivers twice haven't tried reinstalling windows though

[Alex Atkin UK]

59 minutes ago, DesoCS said:

So would upgrading my motherboard be worth it or would the benefit be minimal 

I couldn't find a PCIe comparison that wasn't for the XT though.

[zzlttzz]

Are you sure it's not the in game settings,some game auto increase settings to match your GPU.

Do you still have the old GPU,try plugging it and compare both GPU at the same settings,check whether the new GPU has worse performance?