I'm wondering why the Soviet military aviation of the Second World War seems so poor in high-performance scouts like the dedicated versions of the major Western fighters (for example: Spitfire PR). It seems that throughout the war slow and antiquated planes remained in operation (R.5, R.10, Po.2); the only version I can find of a more modern and faster airplane is the Pe-2R, built, however, in a few specimens.
Thanks for any help.
Interesting topic.
In my opinion, the main reason was the change of priorities dictated by the overall strategy of the Soviet leadership.
There was certainly some interest in development of long range and high altitude recon aircraft in 1930s.
ANT-25 and
ANT-37 projects come to mind. Also
BOK family by Chizhevskiy.
But then the focus shifted to the attempts of bridging the fighters gap which became apparent since the start of WWII and to the tasks of close air support. Specialised reconnaissance a/c development was left for the "second tier" designers as Kocherigin, Neiman, etc. The designers were good but they lacked technical and financial support and attention of Party and military brass.
When German-Soviet war began, most of the efforts were concentrated (once again) on the fighters and on the close air support "shturmoviks". Probably RKKA (Army) was not interested as well as there were other more pressing issues in 1941-1943. And when Red Army began to advance, there was no real long range bomber force and interdiction operations were conducted in areas just behind the enemy lines... so why to bother with anything but existing Pe-2R/Pe-3, some Yaks and lend leased Spits, etc.
Just to note that there were other categories somewhat "neglected" as well: night fighters, artillery spotters, liaison, heavy bombers, sea planes, long range escort, etc.. Demand was partly met by lend leased equipment in some categories, but not everywhere.