Google Pixel 10 pro xL has a G5 processor, but it has the same exact problem as the S26 ultra. Both operate in Canada.
It may not be the processor, but the version of Android. Maybe a global Chinese phone will have the same problem as the S26 or pixel xL. But a Chinese phone that works in Asia will work better.
What version of software is on the Xiaomi Redmi?
What version s/w is on the Snapdragon 8 g5?