Location of the server has nothing to do with this.
It’s most likely an unoptimized resource. If you didn’t write them yourself, it’s going to be very difficult to debug. And with the information provided, none of us can help too. Seeing hitch warnings is bad, but by themselves don’t give any info on what’s wrong.
Check out this topic to pinpoint better what’s causing the hitch warnings Speeding up your Server 101 (Windows)