Logs and screenshots sent to Mojang support, no help provided, given link to create a bug report. 

Reported to Mojang support :

[for release 1.12.2] for several days leading to the final failure, the launcher would download "native windows .jar" files. my game has become laggy and progressively slower each time (still playable). until the latest release (1.13, i still play 1.12.2), now i get only about 2 or 3 fps at most. i have updated java and video drivers, no help. i also typically pause the game and allow it to update chunks, but no change. i have uninstalled several external programs in hopes it would help, also, no change. any way to get a previous version of 1.12.2 so i can continue to enjoy minecraft?

Tested 1.13 and 1.11, both are laggy, but playable. Only 1.12.2 seems to be so slow that it has become unplayable.   No version has same performance as had before release of 1.13.

Stack: [0x0000000003440000,0x0000000003540000],  sp=0x000000000353e5a8,  free space=1017k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [atio6axx.dll+0x1966ae7]
C  [atio6axx.dll+0xc7645e]
C  [atio6axx.dll+0xc76632]
C  [atio6axx.dll+0xc010a7]
C  [atio6axx.dll+0xbdfc78]
C  [atio6axx.dll+0x251ff9]
C  [atio6axx.dll+0x7d1283]
C  [rzdspsrv.dll+0x780e7]
C  [rzdspsrv.dll+0x41477]
C  [rzdspsrv.dll+0x43098]
C  [rzdspsrv.dll+0x40e18]
C  [rzdspsrv.dll+0x7b124]
C  0x00007ffe52781000

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j  org.lwjgl.system.JNI.invokePV(JJ)V+0
j  org.lwjgl.glfw.GLFW.glfwSwapBuffers(J)V+17
j  cfs.a(Z)V+17
j  cfi.c(Z)V+469
j  cfi.a()V+75
j  net.minecraft.client.main.Main.main([Ljava/lang/String;)V+1168
v  ~StubRoutines::call_stub