esta es la parte del formulario en mi código
while($fila2=mysqli_fetch_array($filas2)){
$i=$fila2['id'];
echo"<tr id='$i'>";
$priority=$fila2['prioridad'];
$priority_color=$fila2['prioridad_color'];
echo"<td bgcolor='$priority_color'>"."<input type='text' name='prioridad+$i' id='prioridad' class='$i' value='$priority' size='1'></input>";
echo"</td>";
$rig=$fila2['rig'];
$rig_color=$fila2['rig_color'];
echo"<td bgcolor='$rig_color'>"." <input type='text' name='rig+$i' id='rig' value='$rig' class='$i' size='8'></input>";
echo"</td>";
$hole_size=$fila2['hole_size'];
$hole_size_color=$fila2['hole_size_color'];
echo"<td bgcolor='$hole_size_color'>"."<input type='text' name='hole_size+$i' id='hole_size' class='$i' value='$hole_size' size='3'></input>";
echo"</td>";
$ads=$fila2['ads'];
$ads_color=$fila2['ads_color'];
echo"<td bgcolor='$ads_color' >"."<textarea name='ads+$i' id='ads' class='$i'>$ads</textarea>";
echo"</td>";
$rss=$fila2['rss'];
$rss_color=$fila2['rss_color'];
echo"<td bgcolor='$rss_color'>"."<textarea name='rss+$i' id='rss' class='$i'>$rss</textarea>";
echo"</td>";
$lwd=$fila2['lwd'];
$lwd_color=$fila2['lwd_color'];
echo"<td bgcolor='$lwd_color'>"."<textarea name='lwd+$i' id='lwd' class='$i' >$lwd</textarea> ";
echo"</td>";
$mwd=$fila2['mwd'];
$mwd_color=$fila2['mwd_color'];
echo"<td bgcolor='$mwd_color'>"." <textarea name='mwd+$i' id='mwd' class='$i'>$mwd</textarea>";
echo"</td>";
$m=$fila2['m'];
$m_color=$fila2['m_color'];
echo"<td bgcolor='$m_color'>"." <input type='text' name='m+$i' id='m' class='$i' value='$m' size='1'></input>";
echo"</td>";
$s=$fila2['s'];
$s_color=$fila2['s_color'];
echo"<td bgcolor='$s_color' >"."<input type='text' name='s+$i' id='s' class='$i' value='$s' size='1'></input>";
echo"</td>";
$j=$fila2['j'];
$j_color=$fila2['j_color'];
echo"<td bgcolor='$j_color'>"."<input type='text' name='j+$i' id='j' class='$i' value='$j' size='1'></input>";
echo"</td>";
$x=$fila2['x'];
$x_color=$fila2['x_color'];
echo"<td bgcolor='$x_color'>"."<input type='text' name='x+$i' id='x' class='$i' value='$x' size='2'></input>";
echo"</td>";
$lr=$fila2['lr'];
$lr_color=$fila2['lr_color'];
echo"<td bgcolor='$lr_color'>"."<input type='text' name='lr+$i' id='lr' class='$i' value='$lr' size='3'></input>";
echo"</td>";
$lf=$fila2['lf'];
$lf_color=$fila2['lf_color'];
echo"<td bgcolor='$lf_color'>"."<input type='text' name='lf+$i' id='lf' class='$i' value='$lf' size='3'></input>";
echo"</td>";
$surface=$fila2['surface'];
$surface_color=$fila2['surface_color'];
echo"<td bgcolor='$surface_color'>"."<input type='text' name='surface+$i' id='surface' class='$i' value='$surface' size='3'></input>";
echo"</td>";
$date=$fila2['date'];
$date_color=$fila2['date_color'];
echo"<td bgcolor='$date_color'>"."<input type='text' name='date+$i' id='date' class='$i' value='$date' size='6'></input>";
echo"</td>";
echo"<td>"."<input type='text' name='date' size='1'></input>";
echo"</td>";
$comentario=$fila2['comentario'];
$comentario_color=$fila2['comentario_color'];
echo"<td bgcolor='$comentario_color' id='com'>"."<textarea id='comentario' name='comentario+$i'class='$i'> $comentario</textarea >";
echo"</td>";
$fsn=$fila2['fsn'];
$fsn_color=$fila2['fsn_color'];
echo"<td bgcolor='$fsn_color'>"."<input type='text' name='fsn+$i' id='fsn' class='$i' value='$fsn' size='2'></input>";
echo"</td>";
echo"<td >"."<a href='eliminar.php?id=$i'><button type='button' class='btn remove' id='$i' style='width:30px; height:5px'></button></a>";
echo"</td>";
echo"</tr>";
}
echo"<input type='hidden' name='lar' value='$i' id='largo' size='2'maxlength='10'></input>";
Mi pagina falla cuando supero 50 filas 
