Delay transferring out from auto attendant

Unfortunately, my company has the same problem. I constantly get complains and I am hopeless, as an IT professional I can't do anything about it. I've been living with this problem since Microsoft Teams for desk phones been introduced and little improvement on call delay via call queue was made, other than the conference mode, which seems to have been a way to calm us down. Why other cloud services do not have this problem and MS can't figure this out? Maybe they should copy the technology from the smaller guys. Would switching to Verizon PSTN calling for Teams make any difference or is it strictly a software issue here.