maybe... sorry, there isn't enough info for me to be definitive
It could be your PC, ie either OS or other software/settings on it, a Windows Update/driver issue (other threads on this... not sure how real it is), your local LAN, or your ISP. It is highly unlikely to be anything having to do with OBS itself
most likely either
- your upload bandwidth isn't what you think it is,
- something on your LAN is consuming that bandwidth,
- or your ISP has a 'problem'
so next steps are the basic
- try lowering bitrate to identify if there is any rate that is stable (ie 1000 kpbs vs 6000)... don't stop there, just an important baseline to establish
Do you have an alternate PC to test a simple stream with? can be static image so low CPU/CPU load, but similar bitrate?
we just trying to see if WAN link can support any stable stream (even at a low rate)
- remove EVERYTHING else from LAN (ie airplane mode, or no power, etc... not just not in current use) and try again
do you know how to check/monitor your real-time WAN usage (at router/modem)?
- compare that to your PC to see if significant discrepancy (don't expect to match... but if PC is near 0 and WAN outbound
usage is fluctuating with large numbers, then you have something to troubleshoot... could be something you simply didn't understand/expect, or could be malware infected device, or a # of other things)
Have you tried streaming (same PC) from a different Internet location with a known good upload available bandwidth?
- fix your Win10 settings (why is Game DVR on?), etc [check your OBS log]
- make sure not running unnecessary s/w on Win10, especially any software that tweaks your network performance (ie make sure something on your PC isn't the cause of the bottleneck)
- run network tests (pingplotter or other for finer grained test of network latency to various destinations)
- try alternate streaming target (after you do above.. looks like your log shows multiple stream targets attempted, right?)