# VIO keeps falling out

Source: https://forum.modalai.com/topic/3312/vio-keeps-falling-out
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: m500
Posted: 2024-04-11 00:47:28 UTC by wilkinsaf
Replies: 2 · Views: 689

## wilkinsaf · 2024-04-11 00:47:28 UTC

Hello, 

We have a stock m500 that we are flying with. We did upgrade the SDK to 1.12, but that has pretty much been the only change. We have noticed that we get large VIO dropouts. More than what we got with SDK 0.95. We are unsure if the algorithm changed or the auto-exposure is now different. It appears we do not pick up on any more features after the initial ones we detect. I recorded a video with the QVIO quality, QVIO overlay, and a video of the drone below.

https://drive.google.com/file/d/1BwvEH_xEdVYkOApaPHt4Ihs6pbDmLCc7/view?usp=drive_link
https://drive.google.com/file/d/1g5dsWWnsaG_SF6XP2rppVfbOsG679cCp/view?usp=drive_link

any suggestions as to what we can change to improve the situation would be great. THank you

## Reply by Moderator (ModalAI staff) · 2024-04-11 23:43:51 UTC

@wilkinsaf The exposure parameters likely changed as they are always being tweaked. Customers frequently need to change those to address different environments for different applications

The docs for VIO troubleshooting are here: https://docs.modalai.com/flying-with-vio/#troubleshooting-vio

The best advice is to compare the qvio_overlay for each. it can tell you pretty clearly what's going wrong

## Reply by wilkinsaf · 2024-05-08 17:30:50 UTC (in reply to Moderator)

Following up here. We upgraded to a voxl2 and stopped since this error. we think it might have been an issue with voxl flight on the newest SDK for auto exposure