Anyone else developed "too many lost IMU samples" after weeks of perfect performance - RIFT

[Kinky Jalepeno]

Anyone else developed "too many lost IMU samples" after weeks of perfect performance - RIFT

Hi Folks,
Just trying to gather data on my issue.

Briefly - My Rift has worked perfectly from day 1. I have a very high end machine (i7-7700, 1080ti, 32gb ram and Asus Maximus IX hero mobo blah blah).

I must have played about 35 hours of ED without a single issue until one Sunday morning I decided to have a go and out of the boue I was getting tracking freezes/losses
I watched the Oculus window and saw I was getting a warning from the headset so clicked on it and moused over the error.

Too many lost IMU samples - expected <=2 actual 280

I have tried literally everything including getting the Inatec USB card recommended by Oculus but nope, still have the issue.

Ok interestingly I only have the issue in ED, everything native to Oculus home works perfectly so I don't suspect a hardware fault anywhere or it would be across the board whatever I was playing.

Theory - When starting ED in VR mode, the Oculus software obviously has to boot in to act as the interface between the HMD and the game. I suspect this is a software issue between these two applications as nothing has changed on my PC, no updates, no NVidia driver updates etc. The Rift firmware is similarly unchanged.

Oculus support looked at my logs and couldn't see any problem which I find odd since tracking loss would obviously show up in the debug so think I'm being fobbed off.

Anyone else have/had a similar issue?

As it stands the shop I bought the Rift from is happy to swap it for another, or allow me to play £200 extra and pick up the Vive instead which is my preference right now.

Thanks for your time
o7

 

[Orvidius]

The Inateck card they recommended unfortunately can't adequately handle all of the ports running Oculus gear all at once. It's probably fine with one sensor and the headset, but with multiple senors on it, it's not quite up to the job. You need a multi-controller card, preferably one with four controllers (one per port), so that you can plug in all of the devices and have the full amount of power and bandwidth available to each, instead of them competing for the same resources.

I had all sorts of tracking issues and connection failures at one point as well. It all went away when I got one of these for my sensors. I have three sensors plugged into that (4th port doesn't work for some reason, but I didn't bother returning it), and the HMD is plugged into the back of the motherboard, and it works great.

 

[Kinky Jalepeno]

The Inateck card they recommended unfortunately can't adequately handle all of the ports running Oculus gear all at once. It's probably fine with one sensor and the headset, but with multiple senors on it, it's not quite up to the job. You need a multi-controller card, preferably one with four controllers (one per port), so that you can plug in all of the devices and have the full amount of power and bandwidth available to each, instead of them competing for the same resources.

I had all sorts of tracking issues and connection failures at one point as well. It all went away when I got one of these for my sensors. I have three sensors plugged into that (4th port doesn't work for some reason, but I didn't bother returning it), and the HMD is plugged into the back of the motherboard, and it works great.

Thanks for the advice and yeah I only have 1 sensor in the USB card, one in the back of the PC in a USB 3.0 and the 3rd in a 2.0. Headset directly into mobo.
As I said I had zero issues for two weeks with everything into the mobo ports. When they did develop, they only happened in ED and thats when I tried the card which made no difference.
All the games n stuff ran directly from Oculus still work perfectly so I know this isnt a general hardware issue at either end or I'd be having issues with pretty much everything.

I'm switching to the Vive next week anyway as ED is what I built my PC and bought the headset for, if Oculus support are fobbing me off then bye bye I guess.

 

[[VR] Frank_G]

I had one of the Inateck 4 port USB3 cards. I got a lot of lag in VR, but after i pulled the card out, everything was a lot smoother. No good experience with that card.
I use an Asus Maximus Ranger VII, 32 Gigs RAM, i5 4690K and a 1080ti and a 2 sensor Rift setup.