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regarding RealTek GbE LAN adapters, install the latest drivers for those from Realtek's web site.

AND make sure Large Send Offload (LSO) is enabled for Realtek GBE as that is usually enabled by...

there were some rumors about that but with Win10 that has not actually happened yet as noted by this ZDNet article by Ed Bott:...

ah thanks Philip. the 4.1.0 version worked great on my Win8.x machines

speaking of netsh, why not make future versions of the TCP Optimizer program use the netsh int tcp set global initialRto=3000 or netsh int tcp set global initialRto=2000 command to change the Initial...

well you thought wrong on that template change, which occurred starting in Win10, not 8.1.

upon further testing, it was TCP Optimizer v4.06 and earlier that used "PowerShell.exe Set-NetTCPSetting...

actually Philip I found the problem:

TCP Optimizer v4.0.9 (and maybe v4.0.8) was using "PowerShell.exe Set-NetTCPSetting -SettingName Internet -InitialRto 3000" to change the Initial RTO value,...

@Philip

It looks like the latest version of TCP Optimizer (v4.0.9) can not seem to change the Initial "Retransmit Timeout" (RTO) setting from 3000 to 2000 (or vice-versa) in Windows 8.1.
I ran...

the "Classic" Windows Defender interface has been removed in the 1803 version of Windows 10, Qui-Gon John.
use an older release of Win10 (like the v1709 release) if you like the older Windows...

some Office 2013 updates have cause more problems than fixing them

some "printing" issues discussed in Microsoft answers forums about Word 2013:...

use Never10 or GWX Control Panel

AND

install the KB3184143 update on any Windows 7 SP1 or Windows 8.1 machine

one minor problem with latest version of TCP Optimizer. It seems to "mis-identify" Windows 10 Pro v1803 as "Windows 10 Enterprise build 17134" on one of my computers
...

A 4.0 beta of TCP Optimizer was released late April 2015 that is compatible with Windows 8, 8.1 and 10.
Better late than never.

BTW, for those using Windows Vista and have TCP Chimney Offload...

Win9 has been changed to Win10 and that one is coming out near the end of July 2015
But I'll stay with Windows 7 since it runs fine on my existing PCs

the only bad thing of running TCP Optimizer in "Windows 7 compatibility mode" under Windows 8 or 8.1 is that the TCP Optimizer program will MIS-IDENTIFY the Win8.x OS as "Windows 7" as I just did...

Hello. To the creator(s) of the SG TCP Optimizer tool:

I've noticed that the SG TCP Optimizer program on the SG web site has not been updated for a few years and I recently ran the latest version...

The Softpedia site is very good & very safe. It all depends on who created the pinball game, which should be mentioned on the softpedia site.