I have the same problem for a long time. It's really annoying and their customer support basically told me they know about this issue and will be fixed in one of the feature releases - why is this even in production product that lot of people are paying, I have no idea, but I'm definitely disappointed.
edit: Included answer I've got in mail.
The large number of merging comments is a known issue in the current Lansweeper version and a fix should be included in one of our next releases. We recommend checking our changelog for bug ID: LAN-4083 when a new version is released to make sure this fix is included. You can enable the update check in the Lansweeper web console under Configuration\Your Lansweeper License to be notified of any new releases. You can find our changelog here: https://www.lansweeper.com/changelog.aspx
I also have a lot of assets - HyperV VM's that are stucked in queue for days!