When I was at Kroger, we did see the lines of file inspector issue cause the BESClient to become unresponsive on Linux/Unix endpoints. I believe this was on version 9.5.5.
As @JasonWalker previously indicated, this was fixed in 9.5 patch 6.
Issue 138234 - APAR IV93412 - SLOW EVALUATION CYCLE FOR CLIENTS 9.5.X WHEN USING “LINES OF FILE” INSPECTOR