perf(board): disable Virtuoso when single-board pagination is on

src/views/board/board.tsx

@@ -350,6 +350,7 @@ const Board = ({ feedCacheKey, viewType, boardIdentifier: boardIdentifierProp, i
             <ErrorDisplay error={subplebbitError} />
           </div>
         )}
+        {effectiveInfiniteScroll ? (
           <Virtuoso
             defaultItemHeight={300}
             increaseViewportBy={{ bottom: 1200, top: 1200 }}
@@ -359,11 +360,19 @@ const Board = ({ feedCacheKey, viewType, boardIdentifier: boardIdentifierProp, i
             itemContent={(index, post) => <Post index={index} post={post} />}
             useWindowScroll={true}
             components={footerComponents}
-          endReached={effectiveInfiniteScroll && hasMore ? loadMore : undefined}
+            endReached={hasMore ? loadMore : undefined}
             ref={virtuosoRef}
             restoreStateFrom={lastVirtuosoState}
             initialScrollTop={lastVirtuosoState?.scrollTop}
           />
+        ) : (
+          <>
+            {displayFeed.map((post, index) => (
+              <Post key={post?.cid || `post-${index}`} index={index} post={post} />
+            ))}
+            <footerComponents.Footer />
+          </>
+        )}
       </div>
     </>
   );