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Choppy / Stuttering on Oculus Link with PCI-E USB board

wolffan
Honored Guest

I have a desktop PC with a USB C connection on the ASUS motherboard.  When I connect to this port, Oculus Link works well (no performance issues).  However, this port doesn't charge my Quest, so I am trying to add a PCI-E USB board with sufficient power output.  I bought and tried all of these:

 

https://www.amazon.com/gp/product/B09BN184L7/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B087G7T234/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B089YN57TD/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

 

The good news is that two of them provide enough power to charge the Quest while I play (Startech and Inateck).  The bad news is that none of them work well with Quest/Link.  They all pass the Oculus USB test with 1.7 Gbps.  But, they all result in choppy / stuttering gameplay.  If I immediately disconnect from the PCI-E board and back to my motherboard, the performance comes back to normal.  

 

Any suggestions?  Could be a driver issue with the PCI-E board.  But, doesn't make sense that all of them would have the same issue.  Could be an issue with the PCI-E slot on my motherboard.  But, I didn't see any settings in bios that would affect this.

2 REPLIES 2

wolffan
Honored Guest

I think I figured out part of the issue.  I had updated Oculus debug tool with "high performance" settings for link.  I guess these settings were high enough to cause issues with the PCI-E connection.  But, they worked well with the motherboard USB connection.   I wish the PCI-E USB connection could be as high performing as the motherboard one 😞

rong.amy.5
Honored Guest

I bought both Inateck U21 (https://www.amazon.com/dp/B08M5YHWFD) and Inateck U27 (https://www.amazon.com/dp/B09BN184L7). My Oculus works perfectly on these two cards.