Family Historian User Group

Is anyone else having this, or seen this problem?
First time I start FH, then select the project from the project list, click Open project, it takes about 15 seconds to load the gedcom and show the Individuals list. I can then immediately search and select an individual, and do an edit to his name or other data. I then have to wait a good 30 seconds before the Property box icons become active on that Property box before I can select the Source/Citation, parent up arrow etc. Screen while waiting looks like this: My system is 64bit Windows 10 with 8gb memory and gedcom stats are:
Record Counts...
Individual Records:176992
Family Records: 59246
Note Records: 615
Source Records: 3977
Repository Records: 105
Submitter Records: 3
Submission Records: 0
Media Records: 8415
Place Records: 18810

Once the icons become active, it is service as normal.
What is FH doing during the wait that takes so long?

I wonder if Start up problem (11277) is relevant?

Try disabling your virus checker if you have one temporarily and/or change the thumbnail image loading settings.

Also possibly the ThumbCache.dat file needs deleting? See Media Links (17725).

Thanks, Helen and Mike, I will give those changes a go and see what happens tomorrow!