[Dx4win] CPU usage

[Erkki Heikkinen]

A while ago I had a HD crash on my laptop. After getting it back with XP
Pro reinstalled, it started behaving strangely with DX4Win. Once in a
while (3-4 times per minute) the CPU load is nearly 100%, screen
updating is hesitating and cursor freezes momentarily.

When I stop the radio there is no problem and the CPU load is only a few
percent. I tried different polling intervals from 1000 to 5000 ms - no
difference.

I was reading the archives and found that this has happened to others,
but there was no clear solution. I tried to stop things in the Device
Manager and restart them - no difference.

There is no difference between DX4Win 7.04.04 and the previous version,
so DX4Win is obviously not to blame.

If I remove Windows update KB908531 (discussed in the archives), it will
destroy a lot of other patches which came later, so I have not done
that. Disabling the antivirus program does not make any difference,
either.

DX4Win works, but I do not like these "hesitations" which can take up to
three seconds.

The CPU is a 1.4 MHz Celeron with 750M user memory (service Pack 2 and
all the patches installed)and the radio is IC-756PROIII through MIcroHam
Keyer virtual COM port running latest router software.

Any advice is greatly appreciated.

73 Erkki OH2BF