There’s a long wait before svchost.exe frees up other processes on the Ryzen, so boosted it a little with the help of this from W10 forums. The value in the registry setting for SvcHostSplitThresholdInKB was increased from the 380000 default to 600000 (6GB) RAM. Not the full 8gb as other process won’t get a look-in. 😛
Reminder to self: In case internet drops, get a FAT flash stick to update the TUF B450 mobo for the rig.