What determines the interval of the 'save' function in Writer and can it be changed as it just locks LO?

The automatic incremental save kicks itself off - thereby preventing any work to be continued - and then locks itself. There is no apparent reason for this - the ‘save’ does not complete and te whole program hangs. Occasionally there is a message which says ‘LibreOffice is not responding’ but this does not help as it is inconsistant and still does not complete the ;save; nor release the screen so that it can be worked on.
Windows 10 Home – one of the worst operating systems i have ever come across
LO 5.2.2 64bit

Can the ‘save’ (which is not as it does not complete in a reasonable time - I have waited for oer 4 hours and am still waiting) be programed to occur at longer intervals?

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Menu/Tools/Options/Load & save/General