Quite frankly, JDW, early versions of Open Transport were flaky. Apple's first implementation of DHCP, for example, was completely broken (first hand experience at a university). On the plus side, the engineers were very helpful and always advised on appropriate OT upgrades. On the negative side, I'm sure that much more time was spent on bug fixes than performance tuning.
TCP/IP performance tuning on an SE/30 will deliver small benefits for simple network applications (IRC, FTP, mail) where network speed is the primary limiter. (Even for an accelerated SE/30 which I presume for JDW.) For a web browser, TCP/IP tuning will deliver more marginal benefits because data delivery is much quicker than data processing (ie rendering a web page). First generation browsers (Mosaic, Netscape 1.x) wait until all/most of the data has been delivered before trying to render the page. Later browsers, possibly including Netscape 2.x, attempt to render data as it is received.
Personally I don't consider TCP/IP tuning as a serious problem. For 68K Macs, the physical connections and requirement for secure protocols are more significant. When the world switches to SFTP rather FTP, for example, I won't be able to connect to Secure FTP servers because the software does not exist.
TCP/IP performance tuning on an SE/30 will deliver small benefits for simple network applications (IRC, FTP, mail) where network speed is the primary limiter. (Even for an accelerated SE/30 which I presume for JDW.) For a web browser, TCP/IP tuning will deliver more marginal benefits because data delivery is much quicker than data processing (ie rendering a web page). First generation browsers (Mosaic, Netscape 1.x) wait until all/most of the data has been delivered before trying to render the page. Later browsers, possibly including Netscape 2.x, attempt to render data as it is received.
Personally I don't consider TCP/IP tuning as a serious problem. For 68K Macs, the physical connections and requirement for secure protocols are more significant. When the world switches to SFTP rather FTP, for example, I won't be able to connect to Secure FTP servers because the software does not exist.