This is a known issue
A third-party application runs slowly if Acronis True Image is installed.
Only those applications are affected, whose executable files (.exe) do not have a valid digital signature, AND modify a lot of files in a small period of time as part of its normal work.
To check if an executable file has a valid digital signature or not, follow the steps below:
Backup task hangs at "Calculating time remaining..."
Collect information for investigation of Linux operating system lockups.
Operating system may hang under specific circumstances. To identify the exact cause, it is necessary to analyze Acronis System Report and a kernel dump.
Always make sure you have the latest build of the product (if it's possible).